Lister Petter TS/TR1, Руководство по ремонту

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TS, TR, TX engines workshop manual 35
T SERIES ENGINES WORKSHOP MANUAL
37
2.33 SPEED ADJUSTMENT
The speed of the engine is controlled by the tension
of the speeder spring which is internally attached to
the speed control. The control has two adjustable
screws which are adjusted and locked to give the
rated full on-load or variable speed as determined
by the engine Build.
Fixed Speed Adjustment
The two screws are adjusted and locked against the
speed control lever to give the full on-load speed.
The right hand side adjusting screw (A) increases
the speed when it is turned clockwise.
Figure 2.33.1 Fixed Speed Adjustment
Variable Speed Adjustment
The speed of the engine is controlled by the tension
of the speeder spring which is internally attached
to the speed control which in turn can be operated
either by a cable or rod.
The idling speed must not be set below 850r/min.
1.Move the speed control until it is against the
adjusting screw (A).
2.Turn the adjusting screw (A) anti-clockwise until
it has no further effect on reducing the engine
speed.
3.Turn (A) clockwise until the no-load speed is
850r/min.
The adjuster can be turned further clockwise if a
higher idling speed is required.
Figure 2.33.2 Variable Speed Adjustment
4.Tighten the locknut.
5.Move the speed control until it is against the
adjusting screw (B).
If the speed is not correct turn the adjusting
screw (B) clockwise to reduce the speed and
anti-clockwise to increase it.
2.34 THE ENGINE CONTROLS
The Engine Control
The control knob, spindle and plate assembly was
modified on and after the following TS engines:
35 01203 TS1
35 06483 TS2
35 05021 TS3
On later TS and all TR and TX engines the knob
and spindle are one assembly and the location
plate is a separate item.
Note:
The current assembly cannot be used with an
early type of unmodified locating plate.
Removing the Assembly
1.Remove the gear end cover.
2.Remove No.1 cylinder fuel pump inspection
door.
3.Move the automatic excess fuel lever (B) along
the shaft towards the outside of the crankcase
and hold it in this position.
4.Remove the small dowel pin (C).
Figure 2.34.1 Engine Control
5.Remove the spring (D) from its location on the
excess fuel lever.
6.Remove the excess fuel lever assembly (B) and
spring (E) while withdrawing the control lever (F)
and plate assembly (G).
7.Examine and renew the '0' ring (H) if necessary.
8.Replace the cam spring (A), if removed, to the
lever assembly (B).
9.Replace the control lever (F) and plate assembly
(G) through the crankcase into the spring (E) and
Figure 2.34.1 Engine Control
5. Remove the spring (D) from its location on the excess fuel
lever.
6. Remove the excess fuel lever assembly (B) and spring (E) while
withdrawing the control lever (F) and plate assembly (G).
7. Examine and renew the '0' ring (H) if necessary.
8. Replace the cam spring (A), if removed, to the lever assembly
(B).
9. Replace the control lever (F) and plate assembly (G) through
the crankcase into the spring (E) and the excess fuel lever
assembly (B).
10. Relocate the spring (D) on the excess fuel lever.
11. Move the automatic excess fuel lever (B) along the shaft
towards the outside of the crankcase and hold it in this
position.
12. Replace the dowel (C).
13. Replace the gear end cover.
14. Replace No.1 cylinder fuel pump inspection door.
The Speed Control Lever
To ensure the speed control is correctly re-fitted, care must be
taken to ensure the angle is 89°-91° when the speeder spring
spigot is upright.
When the lever is assembled it must be free to rotate.
T SERIES ENGINES WORKSHOP MANUAL
38
the excess fuel lever assembly (B).
10.Relocate the spring (D) on the excess fuel
lever.
11.Move the automatic excess fuel lever (B) along
the shaft towards the outside of the crankcase
and hold it in this position.
12.Replace the dowel (C).
13.Replace the gear end cover.
14.Replace No.1 cylinder fuel pump inspection
door.
The Speed Control Lever
To ensure the speed control is correctly re-fitted,
care must be taken to ensure the angle is 89°-91°
when the speeder spring spigot is upright.
When the lever is assembled it must be free to
rotate.
Figure 2.34.2 Speed Control Lever
2.35 THE FUEL PUMP TAPPET
Removing a Tappet
1.Remove the fuel pump.
2.With the fuel pump removed use long nosed
pliers to remove the tappet insert (A) from the top
of the tappet assembly (B).
Figure 2.35.1 Fuel Pump Tappet
3.Lift out the fuel pump tappet assembly from the
guide (C).
4.Remove the guide locating bolt (D) from the fuel
pump side of the crankcase.
5.Remove the tappet guide.
Replacing a Tappet
1.Replace the guide into the crankcase taking
extreme care to ensure the end with the two flats
enters first and the locating holes in the crankcase
and guide are correctly aligned.
2.Replace the guide locating bolt and a new copper
washer.
3.Replace the tappet.
4.Replace the tappet insert with the smaller section
on the outside.
CAUTION
Failure to fit a new washer to the guide locating
bolt may allow the bolt to touch the tappet and
prevent it operating.
2.36 THE CAMSHAFT
The steel camshaft is carried in plain bearings
in the crankcase at both the flywheel end and in
the centre web(s). A ball bearing attached to the
camshaft and fitted behind the camshaft gear
provides the bearing for the gear end. The camshaft
gear carries the governor weights.
Cams on the camshaft operate the valve tappets,
oil pump, fuel pumps and the fuel lift pump.
Removing the Camshaft
1.Remove the sump.
2.Remove the oil pump.
3.Remove the end cover.
4.Remove the governor and fuel pumps.
5.If the engine is in its normal plane hold the cam
followers clear of the camshaft using suitable
clips or magnets.
6.Gently ease the camshaft out of the crankcase
keeping it square at all times.
7.Remove the cam followers.
Inspecting the Camshaft
a.Examine the camshaft bush for scars or wear.
b.Examine the ball race bearing for wear and
freedom of movement.
c.Check the camshaft gearwheel and crankshaft
pinion teeth for wear.
d.Ensure the cams are not damaged.
e.Check the tappets for scars or damage to the
contact face.
f.Examine the oil seal in the end cover for damage
or wear.
Figure 2.34.2 Speed Control Lever
2.35 The Fuel Pump Tappet
Removing a Tappet
1. Remove the fuel pump.
2. With the fuel pump removed use long nosed pliers to remove
the tappet insert (A) from the top of the tappet assembly (B).
T SERIES ENGINES WORKSHOP MANUAL
38
the excess fuel lever assembly (B).
10.Relocate the spring (D) on the excess fuel
lever.
11.Move the automatic excess fuel lever (B) along
the shaft towards the outside of the crankcase
and hold it in this position.
12.Replace the dowel (C).
13.Replace the gear end cover.
14.Replace No.1 cylinder fuel pump inspection
door.
The Speed Control Lever
To ensure the speed control is correctly re-fitted,
care must be taken to ensure the angle is 89°-91°
when the speeder spring spigot is upright.
When the lever is assembled it must be free to
rotate.
Figure 2.34.2 Speed Control Lever
2.35 THE FUEL PUMP TAPPET
Removing a Tappet
1.Remove the fuel pump.
2.With the fuel pump removed use long nosed
pliers to remove the tappet insert (A) from the top
of the tappet assembly (B).
Figure 2.35.1 Fuel Pump Tappet
3.Lift out the fuel pump tappet assembly from the
guide (C).
4.Remove the guide locating bolt (D) from the fuel
pump side of the crankcase.
5.Remove the tappet guide.
Replacing a Tappet
1.Replace the guide into the crankcase taking
extreme care to ensure the end with the two flats
enters first and the locating holes in the crankcase
and guide are correctly aligned.
2.Replace the guide locating bolt and a new copper
washer.
3.Replace the tappet.
4.Replace the tappet insert with the smaller section
on the outside.
CAUTION
Failure to fit a new washer to the guide locating
bolt may allow the bolt to touch the tappet and
prevent it operating.
2.36 THE CAMSHAFT
The steel camshaft is carried in plain bearings
in the crankcase at both the flywheel end and in
the centre web(s). A ball bearing attached to the
camshaft and fitted behind the camshaft gear
provides the bearing for the gear end. The camshaft
gear carries the governor weights.
Cams on the camshaft operate the valve tappets,
oil pump, fuel pumps and the fuel lift pump.
Removing the Camshaft
1.Remove the sump.
2.Remove the oil pump.
3.Remove the end cover.
4.Remove the governor and fuel pumps.
5.If the engine is in its normal plane hold the cam
followers clear of the camshaft using suitable
clips or magnets.
6.Gently ease the camshaft out of the crankcase
keeping it square at all times.
7.Remove the cam followers.
Inspecting the Camshaft
a.Examine the camshaft bush for scars or wear.
b.Examine the ball race bearing for wear and
freedom of movement.
c.Check the camshaft gearwheel and crankshaft
pinion teeth for wear.
d.Ensure the cams are not damaged.
e.Check the tappets for scars or damage to the
contact face.
f.Examine the oil seal in the end cover for damage
or wear.
Figure 2.35.1 Fuel Pump Tappet
3. Lift out the fuel pump tappet assembly from the guide (C).
4. Remove the guide locating bolt (D) from the fuel pump side
of the crankcase.
5. Remove the tappet guide.
Replacing a Tappet
1. Replace the guide into the crankcase taking extreme care to
ensure the end with the two flats enters first and the locating
holes in the crankcase and guide are correctly aligned.
2. Replace the guide locating bolt and a new copper washer.
3. Replace the tappet.
4. Replace the tappet insert with the smaller section on the
outside.
CAUTION
Failure to fit a new washer to the guide locating bolt may
allow the bolt to touch the tappet and prevent
it operating.
2.36 The Camshaft
The steel camshaft is carried in plain bearings in the crankcase
at both the flywheel end and in the centre web(s). A ball bearing
attached to the camshaft and fitted behind the camshaft gear
provides the bearing for the gear end. The camshaft gear carries
the governor weights.
Cams on the camshaft operate the valve tappets, oil pump, fuel
pumps and the fuel lift pump.
Removing the Camshaft
1. Remove the sump.
2. Remove the oil pump.
3. Remove the end cover.
4. Remove the governor and fuel pumps.
5. If the engine is in its normal plane hold the cam followers
clear of the camshaft using suitable clips or magnets.
6. Gently ease the camshaft out of the crankcase keeping it
square at all times.
7. Remove the cam followers.